19-inch rack cage nut (mid size) screw size
M5 · 10 to 16 mm long
If you are replacing a screw on 19-inch rack cage nut (mid size), the thread is M5 in lengths from 10 to 16 mm.
It is listed for M5 is a common intermediate rack cage-nut size.
This entry is marked confirmed and comes from wansonfastener.com.
For reference, M5 is 5 mm across the threads at 0.8 mm pitch. The imperial size people confuse it with: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
19-inch rack cage nut (mid size) screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M5 | 10–16 mm | 0.8 mm | not stated | not stated | M5 is a common intermediate rack cage-nut size | Confirmed |
Fitment records and sources
M5 is a common intermediate rack cage-nut size
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- Board standoffs and enclosure bosses set the usable length: the screw should clamp the board without bottoming in the standoff.
- Diameter: across the threads an M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 10–16 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source does not name the drive. Standard M5 heads take PH2 for Phillips and T25 for Torx, and a 4 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- Tightening: no device-specific torque is published in these records. The site's general figure for M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- APC Easy PDU rack-mount screws are self-tapping M5x10, intended for the PDU's own mounting brackets rather than standard rack cage-nut threads.
- Stacking frame + rack tab + fender stay needs 18-20mm bolts, not the 12-16mm that come with a cage.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
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M5 x 10mm Black Wafer Head Bike Fender & Rack Screws for Tern MTR Fenders, Blackburn EX-1 Rack, ENVO Stax & René Herse Fender Set – 10-Pack Replacement
$5.99Choose size -
M5 x 10mm Black Wafer Head Folding Mechanism Screws for GOTRAX GXL V2, Rival, XR Ultra & XR Elite – 10-Pack Replacement
$5.99Choose size -
M5 x 12mm Black Wafer Head Cut-off Saw Screws for STIHL TS400 Cut-off Saw (replaces IS-M5x12 9022 341 0960) – 10-Pack Replacement
$5.99Choose size -
M5 x 12mm Black Wafer Head Generator Cover Screws for Honda EM, EB, EG Generators & EU3200i (replaces 90102-Z21-000) – 10-Pack Replacement
$5.99Choose size
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Devices whose records share a thread with 19-inch rack cage nut (mid size), closest length match first.
- Triumph auxiliary power socket / instrument panel bracket also M5 × 16 mm
- QSC K8 loudspeaker yoke bracket also M5 × 16 mm
- Rittal SZ 2504.000 self-tapping screw also M5 × 10 mm
- Carbon frame bottle bosses also M5 × 12–16 mm
- Rittal SZ enclosure profile mounting screw also M5 × 12 mm
- Rittal 7094130 assembly screw also M5 × 16 mm
- Hospital bed siderail and actuator brackets also M5 × 12–16 mm
- Tent frame hub connectors also M5 × 10–16 mm
Questions about 19-inch rack cage nut (mid size) screws
- What size screw does 19-inch rack cage nut (mid size) use?
- M5 × 10–16 mm for M5 is a common intermediate rack cage-nut size.
- How long are the screws in 19-inch rack cage nut (mid size)?
- The records range from 10 to 16 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for 19-inch rack cage nut (mid size)?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.